Sneha's mother has a sample of raw rice in a container. She then added some water to wash it. After some time, the dust particles came at the surface while the rice grains settled down at the bottom. Which processes would help the rice grains to settle down at the bottom

a polar bond is formed when electrons are shared unevenly between atoms

the answer is na (sodium)

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.